Winding machine



June 4, 1946. w. scHwEiTER 2,401,515

WINDING MACHINE Filed Nov. 11, 1945 2 Sheets-Shee 1 June 4, 1946. w. SCHWEITER 2,401,516

WINDING MACHINE Filed Nov. 1l, 1943 2 Sheets-Sheet 2 lllmnllnlllllum Jn venor Ving from the bore of n Patented June 4, 1946 2,401,518 WINDING MACHINE Walter Schweiter, Bergen, Switzerland Application November 11, 1943, Serial No. 509,826

In Switzerland November 16, 1942 17 Claims.

This invention is a machine functioning to produce coreless or hollow cops of yarn for use in the "textile industry. It essentially comprises a rotary spindle to which yarn is continuously supplied and on which it is, or may be, directly wound in the form of a self-sustaining tubular mass and from which such mass is stripped on completion by the retraction of the spindle, and it is provided with all necessary means whereby as each cop has been formed and discharged, and its controlling yarn severed, it is followed by another produced in the same way. and so on continuously.

Special features relate to the mechanism for mounting, moving andV controlling the spindle and its associated parts so as to produce cops of uniform density and size and of any desired length and so that the end of the yarn is left easily accessible for unwinding, usually protrudthe cop. Other features will be recognized from the disclosure which follows in the drawings:

Figure 1 is a vertical section through the spindie axis of a hose-shaped cop winding machine.

Figure 2 is a side view of this hose-shaped cop winding machine.

Figure 3 is a top view hereof.

Figure 4 is a section through the line l-l in Figure 8.

Figure 5 is a section through the gear-box on the line 5-5 inv Figure 8.

Figure 6 is a sectional top-view of the gearbox on the line 8-8 in Figure 4.

Figure l is a sectional front-view of the hoseshaped cop winding machine on the line 1-1 in Figure 1.

Figure 8 is a section on the line 8 8 in Figure 1 through the gear-box with the cover remoyed.

Figure 9 is a section on the line 9-9 in Figure l through the gear-box.

Figure 10 is a side view of the spindle-point on an enlarged scale.

Figure il is a side view he In a casing i a driving-shaft 2 is journaled and driven by any appropriate means. This shaft carries loosely thereon a compound gear comprising spur-gear 3 and worm-wheel I. The hub of the worm-wheel is developed as a clutch member to cooperate with a complementary clutch member i fixed on the driving-shaft 2. The spur gear 3 drives through an idler B, a larger spur gear 1, which is fast on a rotatable member 8, herein referred to as the spindle box. This box contains the winding spindle 3, which has an the gear-box on movable therein. The

angular cross-section fitting the corresponding cross-section of thebore of the box so that the spindle is rotated by the box and is longitudinally rear end ofthe spindle 9 is swivelled in a sliding head ill by means of ball-bearings of a type which prevents separation of the spindle and the head. In the present case the spindle is shown as a square spindle.

The spindle boxl and the swivel head Ill are built into the cover part il of the casing Il and the swivel head III is arranged to slide in this part by means oi its two lateral ribs I2 (appearing in Fig. 9) which slide in horizontal grooves I3 in the cover Il. The free end, or point I5 of the spindle, is tapered and also provided with notches il as shown in Figs. 10 and il and later referred to.

From the front of the casing there project two parallel ilxed rods I6 and i8 braced to each other at their free ends by a cross-brace i1. An axially movable counter-support I9 slides on these rods parallel to the spindle. The lower part 20 embraces the rod I8. 'In this counter-support I3 a counter-pusher 2| is mounted in ball-bearings aligned with the spindle il and adapted to receive and support the free end thereof. The countersupport, i9 and its pusher 2i are urged toward the spindle by a weighted cable 22l which is fastened to the support i9. and is guided over a sheave 23 on the casing and runs thence to a pulley 25 (see Fig. '1) of a weight 24. This same cable extends from the pulley 25 upwardly and over sheaves 2B and 21 for attachment to the horn 2B of the sliding-head IB above referred to. The connection is made by clamp screws 29 (Fig. 9). Thus the weight 2l tends to urge the spindle outwardly or toward the counter-pusher, and also tends to urge the counter-pusher toward the spindle. An overweight 33, shown in Fig. '7, is attached to the cable on the counter-pusher side and biases the cable system in favor of the counter-pusher, urging it normally toward the spindle with a somewhat greater force than the spindle is urged toward the counter-pusher. Beyond this point of attachment to the slide spindle head iii, the cable 22 continues around the sheave 30 to a wind-up drum 32 on the hub of a gear 3i. This is for withdrawing the spindle from the cop and will be referred to below.

When in action the spindle 9 projects from the spindle box B with its point supported in the counter-support 2|. The yarn 34 is led to the spindle and throughy a thread-guide eye 36 mounted on a thread-guide nager 35, which is vibrated back and forth by means contained within the casing I. but omitted from the drawing to avoid complication. Such a thread-guide vibrating mechanism is very well known in this art. When the machine is started in operation the end of the yarn is fixed to the spindle by winding a few turns thereon, or by pulling back the counter-pusher and pinching the yarn between it and the end of the spindle. I'he conical pressing-roll 38, rotatably mounted on a supporting arm 39 journaled on top o1' the cover Il, normally bears on the conical part of the cop during the winding process and the thrust of the growing cop against this roll causes the cop and the spindle to be advanced accordingly. The driving-shaft 2 also carries a worm 4|I, by which it drives a compound gear 4|, 43 on the control-shaft 42 which extends crosswise of the casing I. 'Ihe spur gear 43 in turn drives another gear 44, which is rotatably mounted on a cam-shaft 45. The drive o1' this gear-train is continuous with the drive-shaft 2.

The cam-shaft 45 receives motion from the gear 44 through a, clutch mechanism now to be described and which is similar to the cam-shaft drives customarily found in machines of this general class. The purpose is to actuate the camshaft to the extent necessary for producing a proper sequence of operation of the other parts of the winding mechanism. The gear 44 is provided on its face with one or more drive-pins 45 (Figs. 4 and 9), a locking hook 49 carried on the adjacent disc 41, which disc is fast to the camshaft, is adapted to hook onto one of these pins at the appropriate intervals so that the camshaft will be rotated thereby. The hook is pivoted at 48 (Fig. 4), and is urged toward the pins by a spring 50. It has a trip-lug adapted to encounter the nose 52 of one of the arms of a three-armed lever 53, fast on the counter-shaft 42, but only when such lever is swung to a position in the path of such lug. When such engagement occurs the effect is to disengage the hook from the drive-pin, thereby bringing the cam-shaft 45 to rest. When the trip-lug has thus encountered the nose 52 so as to stop further rotation of the cam-shaft and of itself, it remains in this position until the lever 53 is rocked in the opposite direction so as to disengage the nose from the hook. Thereupon the hook again couples with a drive-pin and resumes the drive of the cam-shaft.

In the present case less than a complete rotation is desired for the irst movement of the camshaft and therefore another nose 54 on another arm of the three-armed lever 53 is provided. This is to be encountered by the trip-lug 5|. The cam-shaft is thus caused to be rotated, under the control of lever 53, for only the arcuate distance between the two noses. It turns first about one-quarter revolution and then three-quarter revolution.

The counter-shaft 42 projects to the exterior of the casing where it carries a lever with two arms. The lower arm 55 is connected by a link 5E to a lever 51 mounted on a frontv casingbracket 58 and in turn connected to a pull-link 59, the front end of which is guided in a hole in the cross-brace I1 and carries a collar 60 in a position in the path of movement of the counter-support i9. As the eiect of the elongating cop 31 pushes the counter-support against the collar 50, the resulting pull on the link 59 and the parts just referred to, rocks the shaft 42 and thereby rocks the three-armed lever 53, above described, in the direction to release the rma s 4 from the drive-hook 49 and thus produce a partial rotation of the cam-shaft 4l.

The upper arm 6| of the two-armed lever I5. 6I on the shaft 42 engages with one arm l2 of a horizontal lever 62-63, which' is connected by a connecting-rod 64 to an abutment member B5 mounted to slide in the slot 55 oi' the cover structure. The abutment 56 is put in the path of the sliding head I0 by the operation of the connections just. mentioned. When the sliding head hits it, the effect is to rock the shaft 42 in the opposite direction to that imparted to it by the collar 60. and thereby the three-armed lever 5I and the collar 6|) are restored to their former positions.

The several functions of this machine are performed in their proper sequence by a series of cams on the cam-shaft 45. described as follows:

The compound gear 3 4 is shifted back and forth on the drive-shaft 2 so as to be alternately connected to the clutch 5 on said shaft and a brake-socket at its other end, by means ot a. shipper lever (S8-B9. This lever is pivoted between lugs 1n and 'il inwardly projecting within the casing. It is connected by a link 'I2 (Fig. 5) to the cam lever 13-14 appurtenant to the disc cam l5 carried by the cam-shaft 45. It is held up to the cam by a spring 16.

An adjacent cam 11, through its cam lever 18 and link 19 operates a cable-clamp I0 (Fig. 5) against the pressure of a spring 82, which thrusts against collar |13 on the link 19. The cable-clamp comprises a bolt 8|) with a wide head 8|. 'I'he cable 22 runs through a hole in this bolt back of the head and when the bolt is actuated by the spring it clamps the head against the cable so that it cannot be moved by the eiect of the weight. This part of the cable runs to the counter-support I9, and accordingly, when vthe cable is locked, this counter-support remains stationary on its guideway rods. This occurs when the spindle is being retracted for stripping off the cop.

The next cam 84 on shaft 45 and its cam lever 85 are connected by link 86 to a. push-rod BIto operate the yarn cutting mechanism against the pressure of a -spring 88 on the rod thrusting against a collar 89 thereon. The cutting mechanism comprises a lower blade 9|) fast to the pushrod 81, an upper blade 9| riding on the lower one and held to it by screws, and slots as indicated in Fig. 6. The blades are respectively provided with ilared seizing-beaks extended from their cutting edges 92 and located just below the spindle box 8. The outer end of the upper blade over-lies a hat cam plate 95 fixed to the side of the casing and engaging a cam slot in such plate by means of its cam stud 93. From the shape of the cam slot it will vbe observed that the two blades move bodily forward, during the initial advance of the pushrod 81 and then move relatively to each other to make the shearing stroke in the last part of the rod movement. Thus the yarnis caught and brought into the action oil the shearing edges. The lower blade is also'guided on the cam plate by means of its lug 95 engaging the under surface thereof.

Still another cam is provided on cam-shaft 45. This is for controlling the cable system and is constituted of a projection 99 (Fig. 9) formed on the face of disc 41 which carries the locking hook 49, above referred to. This face cam 99 actuates a shipper lever ill pivoted on or between the above mentioned lugs 1|) and 1| and carrying cupies an annular groove |02 of a compound gear and clutch member |`||04 i'reely iournaled on arbor |03. This compound member is for driving the wind-up gear 3|, above mentioned, and which is Journaled in the cover part of the casing so that it meshes with gear |01 when the cover is in place. Such drive is not effected, however, until the shipper lever 91 shifts the clutch member |04 into engagement with its complementary clutch member |05, thereby connecting it to the Worm-wheel |06, constantly driven by its engagement with the worm 40 on drive-shaft 2. The drive thus imparted to the wind-up gear pulls the cable 22 in the direction to pull the winding spindle inwards of the spindle box 0, thus stripping ofi the cc l which has been wound on it. The Wind-up gear pulls the swivel head |0 of the spindle rearwardly until it engages and moves to right the abutment 66. As already explained, this rocks the shaft 42 and the three-armed lever thereon to the right.

As shown in Fig. 6, the three-armed lever 53 carries a cam projection |09 on its side face, which, when thus moved by the rocking of shait 42, engages the cam surface |08 on the shipper lever 91, causing it to open the clutch members |0||05, thus terminating the wind-up period. When the spindle is thus withdrawn into the spindle box, the cop which has been wound thereon is stripped off. It will be observed that this winding up of the cable has occurred against the pull of the Weight 24, the tendency of which is to restore the spindle to its advanced position. Means are provided to prevent immediate advance of the spindle in the form of a pawl ||0 journaled on shaft 42. and normally engaging the teeth of the gear |01 to prevent its reverse rotation. This pawl, as shown in Fig. 4, has a weighted end which rides on the edge of a disc cam ||2 oncam-shaft 45. It is actuated by this cam to release the wind-up mechanism when the spindle is to be next advanced.

The conical presser-roll 3B is held in its working position, indicated in Fig. 3, by its supporting lever 39,||3, the arm ||3 of which is engaged to a bell-crank lever H5, which latter bears, by its cam-roller H6, upon the disc cam lll, also borne by the cam-shaft 45, on its external extremity. The function of this cam is to swing the presser-roll clear of the wound cop when it is time for the latter to be stripped from the spindle. This allows the cop to abut the endY of the spindle box for stripping purposes.

Still another cam |I9, mounted on the other projecting end of cam-shaft 45, engages the cambowl |20 of lever |2|-|22, the forward end of which engages the arm |23 of a pivoted cradle |24 placed just below the spindle in a position to catch the cop which is stripped from the latter. The forward end of this cradle finds a support in the cross-brace Il, above referred to and as shown in Fig. 3. The cradle holds the cop only long enough for its trailing yarn to be severed by the knife mechanism, whereupon it rocks on its support when the lever arm |22 is lowered, and thus discharges the cop from the machine.

During the normal course of Winding, the clutch 4-5 being closed, the yarn 34 is wound up on the spindle 9 under the guidance of the vibrating thread-guide 35. In the same proportion as the cop 31 increases in length, it is pushed forward by reaction against the presser-roll 30, carrying the spindle with it, also the sliding-head l0, and also pushing ahead of it the counterpusher 2| and the support |9. At such time the clutch |04 |05 is open and the retaining pawi ||l is clear of the gear |01, so that the cable is free to unwind from the wind-up drum. The locking hook 49 is resting on the nose 52 of the three-armed lever ,53 by its trip-lug 5| and is thereby held away from the driving pins 40. The cam-shaft is therefore still. The weight 24 always urges the counter-pusher 2| against the point |4 of the spindle 9 under pressure, while the overweight 33 te'nds to move both in a backward direction and presses the cop against the presser-roll 0B. This' pressure, which influences the compactness of the cop can be regulated by adjusting the size of the overweight 33.

When the cop has been wound to its desired length the counter-support I9 strikes and moves to the left the stop-collar 60, thereby rocking the shaft 42, as already explained, in the direction to remove the nose 52 from the hook 49 and to advance the other nose 54 into the path oi the hook, about distant. Thereby the lockinghook 49 falls into connection with one 0f the drive-pins 46, thus coupling the cam-shaft to the revolving gear 44. The cams on the cam-shaft call up the following actions, all in the proper sequence:

l. Cam 15 opens clutch 4-5, thus stopping the rotation of the spindle, also of the thread-guide action.

2. Cam swings the presser-roll 30 away from the cop.

3. Cam disc releases the cable clamp 80. causing it to clamp cable 22. thus retaining the counter-support I9 in its most forward position.

4. Cam ||9 rocks the receiving cradle into horizontal or receiving position.

5. Cam 99, through shipper lever 91-90 and its spring |00, closes clutch |04-I05. Thereby the wind-up wheel 3| is set into rotation and winds up `the cable on the drum 32, pulling the spindle backwards and into the spindle box, while the counter-pusher 2| remains, for the time being, in its extreme forward position.

6. Cam ||2 releases the pawl ||0 so that it is free t0 engage the teeth of Wind-up gear |01.

'7. The trip-lug 5| of locking-hook 49. after about one-quarter of a rotation of cam-shaft 45, comes into contact with the nose 54 of the threearmed lever 53 and is thereby disengaged from its drive-,pin and the cam-shaft 45 comes to rest. In the meantime the clutch |04--I 05 being closed, the cable continues to be wound-up on the drum 32 until the swivel slide-head I0 of the spindle 9 encounters the abutment 66 and through the linkage already described, rocks the shaft 42 and the three-armed lever thereon in the other direction. This has the effect, first of opening clutch ind-|05 to stop the retraction of the spindle; next, the nose 54 releases locking-hook 49, allowing the cam-shaft to continue and complete its rotation, that is, until the hook again encounters the nose 52. PaWl ||0, which had already been set free prevented the unwinding of the wind-up wheel when the clutch |04-I05 was disengaged, so that the spindle 9 remains, for the time being, in its withdrawn position.

8. The said cam 99 then engages the lower end of shipper lever 91 to further separate the clutch members |04| 05 and hold them weil out of contact until they are next called into use.

9. Cam restores the presser-roll 30 to its .working position.

7 return to their starting point. thereby engaging the pusher with the point of the spindle.

1i. Cam 84 advances the cutting mechanism a partial stroke until the yarn, which then extends from the thread-guide eye to the bobbin in the cradle, is caught or located between the cutting edges 92.

12. Cam |i2 then frees pawl H0 from the gear lill, thereby allowing the cable to unwind under the pull oi' the weight, thus advancing the spindle to meet the rotary pusher 2i. In such forward movement the notches Il in the spindlepoint I5 catch hold of the yarn extending down from the guide-eye and pinch it tightly against the pusher, thus fixing it to the spindle for the start of the next cop.

13, Cam 84 then continues to move the cutting mechanism forwardly until, by the motion of the upper blade, produced by the cam groove 94, the cutting edges are closed and the yarn severed.

14. Cam lili, operating by levers i22 and |23, then rocks the receiving cradle |24 to dump the cop into a trough or place of deposit.

15. Cam l5 closes the clutch 4-5 just prior to the arrival o! the hook 49 against the nose 52 of lever 53, which stops the cam-shaft, and thereupon the same cycle is repeated.

It may be noted that when the spindle withdraws irom the counter-pusher 2i, it leaves the originally pinched end of the yarn protruding from the end of the cop as a loop, indicated at Il', and therefore easily accessible' for the later unwinding of the cop.

I claim:

l. In an automatic machine for windingy hollow cops, a winding spindle, a thread-guide coacting therewith to guide the yarn back and forth with relation to the spindle, a rotary spindle box in which the spindle slides and byn which itis rotated, a counter-pusher movable in alignment with the spindle and adapted to engage the point thereof. means normally urging the .pusher toward the spindle and the spindle toward the pusher, means for introducing the yarn between the spindle and the pusher, means for advancing the spindle at a rate conforming to the elongating cop and separate means for retracting the spindle for stripping the cop, in combination with automatic mechanism for causing the movements of said parts according to a `predetermined recurring sequence.

2. The combination of claim 1 in which said means for advancing the spindle is the elongating cop itself. including a relatively iixed abutment against which it thrusts.

3. The combination of claim 1 in which said means ior advancing the spindle is the elongating cop itself and a presser-roll against which the cop thrusts and in which means are provided ior removing said presser-roll in advance of stripping.

4. The combination of claim 1 in which the means for urging the spindle point and counterpusher towards each other is biased in favor of the counter-pusher.

5. The combination of claim l in which means are provided to lock the counter-pusheragainst movement when the spindle is being retracted.

6. The combination of claim 1 in which the means for urging the spindle and counter-pusher together is a cable system connected respectively to these parts and movable on sheaves to accommodate the spindle advance.

7. The combination of claim l in which the 8 spindle point is notched to catch the yarn and clamp it to the counter-pusher.

B. In an automatic, hollow cop, winding machine the combination of a longitudinally mov-- able winding spindle, a counter-support for the point of the spindle, means for advancing the spindle into engagement with said countersupport, and means for holding yarn extending from a discharged cop in the path of the advancing spindle, to be clamped thereby against the counter-support.

9. In an automatic, hollow cop, winding machine, a longitudinally movable winding spindle, means for advancing it by the eiect of the elongating cop, a counter-pusher maintained in supporting contact with the point of the spindle, and means for'withdrawing the spindle from said counter-pusher when stripping the cop from the spindle.

10. The combinationv of claim 9 in which a cable system serves to maintain the counterpusher in supporting contact with the spindle, said system comprising a cable swivelly connected to the spindle and also connected to the pusher, and means applied to said cable for imparting the force thereto which maintains said pusher and spindle in contact.

11. The combination of claim 9 in which the means for maintaining the pusher and spindle in contact is a. cable system one end o1 which is swivelled to the spindle and the other end of which is connected to the pusher. with means applied to the cable to put tension thereon to maintain the contact, and an overweighting means also applied to the cable to bias said system in favor of the pusher.

l2. In an automatic, hollow cop, winding machine, a longitudinally movable winding spindie, means for advancing it by the effect of the elongating cop, a counter-pusher, a cable connected to the spindle and to said counter-pusher to maintain the counter-pusher in supporting contact with the point of the spindle, and means for withdrawing the spindle from said counterpusher when stripping the cop from the spindle.

13. The subject matter of claim l characterized by the fact that the means for urging the spindle towards the counter-pusher includes a swivel head in which the spindle can rotate.

14, In an automatic, hollow cop, winding machine, a longitudinally movable winding spindle, means for advancing it by the effect of the elongating cop, a counter-pusher, a cable connected to the spindle and to said counter-pusher to maintain the counter-pusher in supporting contact with the point of the spindle, a weight suspended by said cable causing said cable to urge` the counter-pusher and spindle into contact with each other, a member against which the cop thrusts as it grows, an overweight attached to the cable pressing the cop against the said member. and means for withdrawing the spindle from said counter-pusher when stripping the cop from the spindle.

l5. In an automatic. hollow cop, winding machine, a longitudinally movable winding spindle, means for advancing it by the effect oi the elongating cop, a counter-pusher maintained in supporting contact with the point of the spindle, a member against which the winding end of the cop presses as it is wound, means to move said member out of contact with the cop before withdrawing the spindle from the cop, means for withdrawing the spindle from said counterpusher when stripping the cop from the spin- 9 dle, and meanstoheengagedby the end o! the copssthe spindieiswithdrawntostrlpthecop from the spindle.

16. The subject matter of claim l, characterized by the fact that the said automatic mechanism comprises a cam shaft. a stop operable by the counter-pusher on the completion ol' a cop to start said cam shaft. means to stop the cam shaft after spindle retraction has bemin, and a. stop operable by the spindle mechanism at the endo! itsretractiontorestartthe camshaft.

17. In an automatic. hollow cop, winding mal0 chine. a lonsitudinally movable winding spindle, means for advancing it by the eiect oi' the elongating cop. a counter-pusher, a cable connected to the spindle and to said counter-pusher to maintain the counter-pusher in supporting contact with the point o! the spindle, means for relieving the counter-pusher o! the pull of the weighted cable, and means for withdrawing the spindle from said counter-pusher when stripping the cop from the spindle.

WALTER SCHWEITER.

DISCLAIMER 2,401,516.Walter Schwein?, Horen, Switzerland. WINDING MACHINE.

aimer filed Oct. 29, 1946, by the inventor.

dated June 4, 1946. Disc Patent Hereby enters this disclaimer to claims 2, 4, 8, 9 and 13 in said specification.

[Oficial Gazette November 26, 1946.]

9 dle, and meanstoheengagedby the end o! the copssthe spindieiswithdrawntostrlpthecop from the spindle.

16. The subject matter of claim l, characterized by the fact that the said automatic mechanism comprises a cam shaft. a stop operable by the counter-pusher on the completion ol' a cop to start said cam shaft. means to stop the cam shaft after spindle retraction has bemin, and a. stop operable by the spindle mechanism at the endo! itsretractiontorestartthe camshaft.

17. In an automatic. hollow cop, winding mal0 chine. a lonsitudinally movable winding spindle, means for advancing it by the eiect oi' the elongating cop. a counter-pusher, a cable connected to the spindle and to said counter-pusher to maintain the counter-pusher in supporting contact with the point o! the spindle, means for relieving the counter-pusher o! the pull of the weighted cable, and means for withdrawing the spindle from said counter-pusher when stripping the cop from the spindle.

WALTER SCHWEITER.

DISCLAIMER 2,401,516.Walter Schwein?, Horen, Switzerland. WINDING MACHINE.

aimer filed Oct. 29, 1946, by the inventor.

dated June 4, 1946. Disc Patent Hereby enters this disclaimer to claims 2, 4, 8, 9 and 13 in said specification.

[Oficial Gazette November 26, 1946.] 

